We advise you to not only read the book but actually practice all the exercises in the book. By creating a developer environment and following the steps in every chapter, you will be able to better remember the content, as you will be able to see it right before your eyes. It has been proven that you learn far better by doing rather than just reading.

Every chapter also ends with some quiz questions to check whether you have grasped the content explained in each chapter.

In the Appendix, you'll find all the solutions to the quiz questions from every chapter and also the answers for the mock exam.

All the necessary instructions are provided in the respective chapters.

This book will comprise of over five hours of video tutorials.

You can download the example code files for this book from your account at www.packt.com. If you purchased this book elsewhere, you can visit www.packt.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packt.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Salesforce-Platform-Developer-I-Certification-Guide. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://www.packtpub.com/sites/default/files/downloads/9781789802078_ColorImages.pdf.

Visit the following link to check out videos of the code being run: http://bit.ly/30Fg4LY.

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "The Lightning Component framework can only call methods that have the @AuraEnabled annotation."

A block of code is set as follows:

 public Movie__c getMovie() {
        if(this.movie == null){

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

closeModal: function(component, event, helper){
        var navToMovieTab = $A.get("e.force:navigateToObjectHome");

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Click on the Controller link to write this part of your controller."